Acting for Two: The Ghosts of Christmas Past, Present, and Future have earthly forms. They are a lamp lighter, a charity show barker, and a blind hag, respectively. Their lines when interacting with Scrooge even hint at which ghost each one will be:
Lamp Lighter: You'll be sorry, sir, when you look back. Show Barker:Life will pass you by in just a while, sir, and it may be later than you know. Blind Hag:Come the future, you'll remember me!